Lấy 13 + 18 + 7 = 38(bạn). Bạn được tổng số bạn thích chơi bóng đá, bóng rổ và không thích thứ gì.
Vậy muốn tìm số bạn thích tất cả ta lấy: 38 - 30 = 8(bạn)
Đáp số: 8 bạn
There are 30 students in a class.13 students like football;18 students like volleyball and 7 students don't like anything.How many students like both?
There are 30 students in a class.13 students like football; 18 students like volleyball and 7 students don't like anything.How many students like both?
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-> There are .............. students
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help me!
Nam My primary school has 398 boys and 325 girls .
How many students are there in Nam My primary school .
Answer : There are ..............................students in Nam My primary school .
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in a class A of 160 students, the ratio of boys to girls is 3 to 5.in the class B, the ratio of boys to girls is 3 to 2. when the to classes are combined, the ratio of boy to girls is 1 to 1. how many students are there in the class B